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Johm P.J. Mattiace
John Mattiace.jpg

John P.J. Mattiace

T: 212-300-9883

F: 718-371-9162



Fordham University, B.A. cum laude

Seton Hall University School of Law, J.D.




John’s experience includes representing individuals and businesses in complex lawsuits, providing labor and employment advice and counseling, and guiding corporate transactions. His practice also encompasses real estate transactions, and trust and estate planning.  

A lifelong learner, John lived abroad in both Rome, Italy during his undergraduate time at Fordham, and in Cairo, Egypt during his time in law school at Seton Hall. While in law school John also served as an intern to The Honorable Tonianne J. Bongiovanni, USMJ, The Honorable Dennis Cavanaugh, USDJ, and spent a summer working for the U.S. Army’s Judge Advocate General Corp of the XVIII Airborne Corp at Fort Bragg, North Carolina. While working for the JAG, John helped the Army’s prosecution of Army Sgt Timothy Hennis who was later convicted of murder after being tried for the third time under the U.S. Constitution’s “dual sovereignty” doctrine.


After law school, John clerked for the Honorable Patricia Cleary, J.S.C., in Monmouth County Superior Court where he helped the Court review arguments from counsel and make decisions on proceedings before it.  After clerking for Judge Cleary, John began his private practice with the firm Kroll Heineman Carton where he focused on protecting the rights of workers in the New Jersey building trades with his clients having included labor unions, their workers, and their benefit funds. John won many awards for unpaid benefit funds owed by contractors, and litigated many lawsuits to positive outcomes under commercial contract law, employment discrimination and whistleblower law, and ERISA. John moved on to represent corporate interests at several large law firms, which included Morgan Lewis & Bockius, Kelley Drye & Warren, and Akin Gump Strauss Hauer & Feld. He is trained in complex litigation and counseling, including in the areas of employment law, labor law, and corporate transactional law, and represented many large and influential corporations and financial services firms in lawsuits large and small, from individual plaintiff cases to class and collective actions. 

Having an entrepreneurial spirit, and always wanting to develop and own his practice, John joined with his partner Ryan Tetro in 2022 to launch and build their own law firm. John and Ryan are intent on taking the skills they have both learned in their careers and building a strong firm that serves its clients well.         

John grew up in Manalapan, New Jersey, and proudly graduated high school from Christian Brothers Academy in Lincroft, New Jersey. He went on to earn his B.A., cum laude, in History from Fordham University’s Lincoln Center campus in New York City, and his J.D. from Seton Hall Law School in Newark, New Jersey.  John is happily married to his wife Keri who he met in college, and lives in the Astoria, Queens neighborhood of New York City with his growing family. In his free time you can find him spending time with his family, watching baseball, or visiting his parents and good friends back in New Jersey.


New York

Southern District of New York

Eastern District of New York

New Jersey

District of New Jersey

Super Lawyers
Best Lawyers



New Jersey Office

125 Half Mile Road, Suite 200
Red Bank, NJ 07701

New York City Office

515 Madison Avenue, 8th Floor

New York, NY 10022

For any general inquiries, please fill in the following contact form:

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